when you dislike someone so much that if you and the other person were in an empty room with a knife in the middle, one or both would be dead

Hate is an attitude one human being has towards another that loosely translates into the concept of NOT EVEN CONSIDERING CROSSING THE STREET TO PISS ON THEM IF YOU SAW THEM ON FIRE...

Several things can cause hate...

This usually comes from someone doing something that leads you to the sensation of feeling the ultimate form of pain emotionally through a violation of your trust, an act of disrespect, an act of defying the concept of a stand up guy and doing something that is in direct opposition to the principles by which you live your life and other serious acts of bad Karma, such as making someone feel like a fool or toying with their emotions or putting their loved ones in danger, etc...

One good example is how this can be the end result of unrequited love and from the realization that this person was an emotional tampon to someone who used them in this fashion...

Hate is an awful emotion that burns in the soul of those who feel it and can be very dangerous to those whom are the recipient of this hate or to the person who feels it over long periods of time....

The path to the Dark Side of the Force.

The process of being disliked by many because you are better than them

To show one's emotion in a rude demeanor to another, expressing distaste, displeasure or hate for one.

A feeling you get when you see or hear something you dislike so much, you wanna kickbox the shit out of it. Usually, when you hate something, you want to punch, kick or hit it with a blunt object, such as an aluminum baseball bat. It feels great when you release your hatred, whether by destroying things, such as a wall or hotel room, or by fighting.

What I feel when I talk to you

jealousy and anger rolled up in one

(noun). Calculated and/or intentional intense dislike; an intensified and elevated level of anger; an unnatural emotion (i.e. hate is something that is derived from natural emotions such as anger or fear); learned dislike or loathing of another person, group, or thing.